Recipes

Short, complete daemon.toml snippets you can copy into your own config and adapt. For full example projects you can clone and run, see Runnable examples.

Select transactions by address

SplitBlock breaks each block into individual transactions, ParseCbor decodes them, and Select keeps only the ones touching a given address. See the Select filter.

[source]
type = "N2N"
peers = ["backbone.mainnet.cardanofoundation.org:3001"]

[intersect]
type = "Point"
value = [37225013, "65b3d40e6114e05b662ddde737da63bbab05b86d476148614e82cde98462a6f5"]

[[filters]]
type = "SplitBlock"

[[filters]]
type = "ParseCbor"

[[filters]]
type = "Select"
skip_uncertain = true
predicate = "addr1qx2fxv2umyhttkxyxp8x0dlpdt3k6cwng5pxj3jhsydzer3n0d3vllmyqwsx5wktcd8cc3sq835lu7drv2xwl2wywfgse35a3x"

[sink]
type = "Stdout"

Stream parsed transactions to JSONL files

IntoJson turns the parsed records into JSON, and the FileRotate sink writes them to rotated, compressed JSONL files under ./output/.

[source]
type = "N2N"
peers = ["backbone.mainnet.cardanofoundation.org:3001"]

[intersect]
type = "Point"
value = [4493860, "ce7f821d2140419fea1a7900cf71b0c0a0e94afbb1f814a6717cff071c3b6afc"]

[[filters]]
type = "SplitBlock"

[[filters]]
type = "ParseCbor"

[[filters]]
type = "IntoJson"

[sink]
type = "FileRotate"
max_total_files = 5
output_format = "JSONL"
output_path = "./output/logs.jsonl"
max_bytes_per_file = 5_000_000
compress_files = true

Match a metadata label with a regex

A Select filter predicate can match on transaction metadata — here, label 674 whose text matches a regular expression.

[chain]
type = "preprod"

[source]
type = "N2N"
peers = ["preprod-node.world.dev.cardano.org:30000"]

[intersect]
type = "Tip"

[[filters]]
type = "SplitBlock"

[[filters]]
type = "ParseCbor"

[[filters]]
type = "Select"
skip_uncertain = false

[filters.predicate.match.metadata]
label = 674

[filters.predicate.match.metadata.value.text]
regex = "Hello World"

[sink]
type = "Stdout"